Accounting software for WordPress
A Canadian tax calculator your clients can use on your site
Income tax, sales tax, and payroll, worked out in the browser. Lite is free. Pro adds payroll and take-home pay from $19 CAD a month.
- Canada-wide, every province and territory
- Updated for the 2026 tax year
- WordPress 6.5+ compatible
- Secure Stripe checkout
What the calculators cover
One plugin for the figures a firm looks up every day. The visitor’s numbers stay on their own screen.
Income tax
Federal and provincial tax on the income a visitor types, using the rates shipped with the plugin.
Sales tax
GST, HST, PST, and QST, added to a price or removed from a total.
Payroll and take-home
Pro adds payroll deductions and take-home pay for the provinces and territories on file.
Private by design
What someone types stays in the browser unless they later ask for an email or a PDF.
A block or a shortcode
Place a calculator on the page your clients already visit. No separate app to send them to.
Mortgage payment
A payment from the interest rate the visitor types. The rate is theirs, not one the plugin quotes.
How it works
- 1
Download Lite
Install the free plugin the same way you install any other WordPress plugin.
- 2
Place a calculator
Add the block or the shortcode to the page. The estimate runs in the visitor’s browser.
- 3
Add Pro for payroll
Choose a plan from $19 CAD a month when you need payroll and take-home pay. Cancel renewal any time.
Lite and Pro
Start with the free plugin. Move to Pro when payroll belongs on the same page.
| Included | Lite | Pro |
|---|---|---|
| Income tax | Yes | Yes |
| Sales tax | Yes | Yes |
| Payroll and take-home pay | No | Yes |
| Price | Free | From $19 CAD a month |
Questions firms ask first
The full FAQ covers the tax year, privacy, plans, and cancellation.
Does this file a return?
No. The figures are estimates. They are not a filing and they are not a ruling.
Where do the typed numbers go?
They stay in the browser. A result is sent only when someone asks for an email or a PDF, and only after you turn that option on.
What happens if I cancel?
Renewal stops. Access, updates, and support continue until the period you already paid for ends. Unused time is not refunded, except where the law requires it.
Featured product
BOMCAS Calculators
Canadian income tax, sales tax, and payroll calculators for WordPress. Lite is free. Pro adds payroll and take-home pay.
Free, or from $19.00 CAD a month
Put the calculators on your WordPress site
Sold by BOMCAS. Owned by Dellendo Farquharson.